Exemplos de computeEdgeIntersections em C++ (Cpp)

Exemplo n.º 1

Arquivo: ExclusionPolygon.cpp Projeto: dog-god/iptv

void ExclusionPolygon::getIncludedIntervals(float logicalTop, float logicalHeight, SegmentList& result) const
{
    if (isEmpty())
        return;

    float y1 = minYForLogicalLine(logicalTop, logicalHeight);
    float y2 = maxYForLogicalLine(logicalTop, logicalHeight);

    Vector<ExclusionInterval> y1XIntervals, y2XIntervals;
    computeXIntersections(y1, true, y1XIntervals);
    computeXIntersections(y2, false, y2XIntervals);

    Vector<ExclusionInterval> commonIntervals;
    intersectExclusionIntervals(y1XIntervals, y2XIntervals, commonIntervals);

    Vector<ExclusionInterval> edgeIntervals;
    computeEdgeIntersections(y1, y2, edgeIntervals);

    Vector<ExclusionInterval> includedIntervals;
    subtractExclusionIntervals(commonIntervals, edgeIntervals, includedIntervals);

    for (unsigned i = 0; i < includedIntervals.size(); i++) {
        ExclusionInterval interval = includedIntervals[i];
        result.append(LineSegment(interval.x1, interval.x2));
    }
}

Exemplo n.º 2

void ExclusionPolygon::getExcludedIntervals(float logicalTop, float logicalHeight, SegmentList& result) const
{
    if (isEmpty())
        return;

    float y1 = logicalTop;
    float y2 = y1 + logicalHeight;

    Vector<ExclusionInterval> y1XIntervals, y2XIntervals;
    computeXIntersections(y1, true, y1XIntervals);
    computeXIntersections(y2, false, y2XIntervals);

    Vector<ExclusionInterval> mergedIntervals;
    mergeExclusionIntervals(y1XIntervals, y2XIntervals, mergedIntervals);

    Vector<ExclusionInterval> edgeIntervals;
    computeEdgeIntersections(y1, y2, edgeIntervals);

    Vector<ExclusionInterval> excludedIntervals;
    mergeExclusionIntervals(mergedIntervals, edgeIntervals, excludedIntervals);

    for (unsigned i = 0; i < excludedIntervals.size(); ++i) {
        ExclusionInterval interval = excludedIntervals[i];
        result.append(LineSegment(interval.x1, interval.x2));
    }
}